What happens next? Depends on if the GOP kill the filibuster in the Senate. I mean, why the heck not? They mocked the pandemic, one million died. Who cares. Sent US troops to die in Iraq for weapons that didn't exist. Meh... they'll get power back shortly. The GOP can get away with just about anything and the best part of the GOP is being phased out and replaced with the JD Vances.
By "filibuster" you mean that Ancient Tradition of the Senate -- the filibusterless filibuster dates all the way back to Clinton's term in
an earlier century -- that great and noble Ancient Tradition which Joe Manchin so proudly preserved, at the cost of making it harder for blacks to vote in states like Mississippi and Georgia?
Anyone who thinks the QOPAnon Party won't leap at the chance to void that rule whenever it's convenient for them needs their dosages adjusted.
The Trump voters will never know of such hypocrisies of course. They come out of the woodwork once every 4 years, watch a few episodes of
Infowars or such, pull the red-colored lever, and resume their life of ignorance.